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c) Construct the confidence interval. (Round to three decimal places as needed.)

c) Construct the confidence interval. (Round to three decimal places as needed.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Use the sample data and confidence level given below to complete parts (a) through (d). In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2395 subjects randomly selected from an online group involved with ears. 1008 surveys were returned. Construct 90% confidence interval for the proportion of returned surveys. E Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. 0.421 (Round to three decimal places as needed.) b) Identify the value of the margin of error E. E= 0.017 (Round to three decimal places as needed.) c) Construct the confidence interval, (Round to three decimal places as needed.)
Transcribed Image Text:Use the sample data and confidence level given below to complete parts (a) through (d). In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2395 subjects randomly selected from an online group involved with ears. 1008 surveys were returned. Construct 90% confidence interval for the proportion of returned surveys. E Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. 0.421 (Round to three decimal places as needed.) b) Identify the value of the margin of error E. E= 0.017 (Round to three decimal places as needed.) c) Construct the confidence interval, (Round to three decimal places as needed.)
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